Dell Latitude e6400 Drivers for Windows XP/Vista/7 - Halo, At this time the drivers sharing entitled Dell Latitude e6400 Drivers for Windows XP/Vista/7.

Dell Latitude e6400 Drivers for Windows XP/Vista/7

Dell released official Windows XP, Vista and 7 drivers for this model. I just remake the list base on the importance drivers and remove the application (optional installation) including unimportant drivers. Please install according to the order given and do let me know if you have the problem with the installation.
Install all driver base on the order, reboot if you asked to do so.

Chipset
Intel Chipset Installation Utility
Windows XP/Vista/7 (32 and 64-bit) : Download

AMT
Intel Active Management Technology (AMT)
Windows XP/Vista/7 (32/64-bit) : Download

AMT - HECI
Intel Active Management Technology Host Embedded Control Interface
Windows XP/Vista/7 (32/64-bit) : Download

Notes - Storage:
Originally Intel matrix Storage Manager Deploy for Windows XP, later on Intel Rapid Storage Technology is the newer version for the Intel Matrix, so for these 2 storage driver I recommend to use the Intel Rapid Storage technology over IMSM. You will notice the boot time difference in windows 7.
Pre OS storage (for Windows Installation - In case you need it) - SATA : 32-bit 64-bit

Storage
Intel matrix Storage Manager Driver
Windows XP/Vista/7 (32/64-bit) : Download

Storage
Intel Rapid Storage Technology Driver
Windows XP/Vista/7 (32/64-bit) : Download

Notes - Graphic:
There are 3 applicable graphic drivers, choose base on your specification. Normally a small sticker near to your keyboard will show what type of graphics you have.

Graphic
Intel GMA 4500/4500M/4500MHD Drivers
Windows XP 32-bit: Download
Windows XP 64-bit : Download
Windows Vista/7 (32-bit) : Download
Windows Vista/7 (64-bit) : Download

Graphic
Intel GM45/GE45/GS45 Integrated Graphics
Windows XP 32-bit: Download
Windows XP 64-bit : Download
Windows Vista/7 (32-bit) : Download
Windows Vista/7 (64-bit) : Download

Graphic
nVidia Quadro FX370M, Quadro NVS 160M, Quadro NVS160M, Quadro FX 770M, Quadro FX 3700M, Quadro FX 2700M, Quadro FX1700M.
Windows XP 32-bit: Download
Windows XP 64-bit : Download
Windows Vista/7 (32-bit) : Download
Windows Vista/7 (64-bit) : Download

Audio
IDT 92HDxxx High Definition Audio Driver
Windows XP/Vista/7 (32/64-bit) : Download | Mirror

Card Reader
Ricoh R5C8xx/R5U24x Memory Card Reader Driver
Windows XP/Vista (32/64-bit) : Download
Windows 7 (32/64-bit) : Download

Webcam
Creative Labs Integrated Webcam Driver
Windows XP/Vista (32/64-bit) : Download

Touchpad
Dell Touchpad/ Pointing Stick Driver
Windows XP/Vista/7 (32/64-bit) : Download

LAN - Ethernet Controller
Intel 825xx Gigabit Platform LAN Network Device Driver
Windows XP/Vista/7 (32/64-bit) : Download

Bluetooth
Dell Wireless 370 Bluetooth Minicard
Windows XP : Download
Windows Vista : Download
Windows 7 : Download

Bluetooth
Dell Wireless 410 BT+UWB Minicard
Windows XP/Vista : Download
Windows 7 : _Use windows Vista/XP driver and install in compatibility mode for windows Vista.

Notes - Wireless:
There are 3 applicable graphic drivers, choose base on your specification. You can try to install the driver if you not sure which to choose, installing wrong driver will not harm your system but please make sure to uninstall it before installing other driver. The easiest way to identify you wireless card is by looking for the hardware ID.

Wireless
Dell Wireless WLAN 1397/1501/1510/1520 Half MiniCard Driver
Windows XP (32/64-bit) : Download
Windows Vista/7 (32/64-bit) : Download

Wireless
Intel � Wi-Fi Link 5000/5100/5300 Driver
Windows XP : Download
Windows XP 64-bit : Download
Windows Vista 32-bit : Download
Windows Vista 64-bit : Download
Windows 7 32-bit : Download
Windows 7 64-bit : Download

Wireless
Intel (R) WiMAX Link 5150
Windows XP 32-bit : Download
Windows XP 64-bit : Download
Windows Vista 32-bit : Download
Windows Vista 64-bit : Download
Windows 7 32-bit : Download
Windows 7 64-bit : Download

Broadband
Dell Wireless 5620 Mobile Broadband Mini-Card Driver
Windows XP/Vista/7 (32 and 64-bit) : Download

Broadband
Dell Wireless 5540 HSPA Mini Card, v.R2AA06, A12
Windows XP/Vista/7 (32 and 64-bit) : Download

Modem
Conexant D330,HDA,MDC,v.92 Modem Driver
Windows XP 32-bit : Download
Windows XP 64-bit : Download
Windows Vista 32-bit : Download
Windows Vista 64-bit : Download
Windows 7 32-bit : Download
Windows 7 64-bit : Download
Red Hat (Linux) : Download

Touch Screen
Dell Digitech Touchscreen Driver
Windows XP/Vista/7 (32 and 64-bit) : Download

Monitor
Dell ST2220T Touch Monitor Driver
Windows XP/Vista/7 and Server 2003 (32/64-bit) : Download

Mouse - Driver
Logitech Bluetooth Travel Mouse Driver
Windows XP/Vista/7 (32 and 64-bit) : Download

Mouse - Application
Logitech Bluetooth Travel Mouse Application
(Please install the mouse driver first! - This installation is optional)
Windows XP/Vista/7 (32 and 64-bit) : Download

Keyboard
Dell USB Smart Card Reader Keyboard Driver
Windows XP/Vista/7 (32 and 64-bit) : Download

WINDOWS 8 and 8.1 Upgrade and Drivers for Latitude e6400.
If you plan to install windows 8 or windows 8.1 (any version), here is the step you need to do in order to install the drivers you need:

1. Run windows updates - install any drivers update available.
2. For Intel drivers (chipset, AMT, MEI, Graphic and Wireless) let Intel detect which drivers you need: Auto detection.
3. Check what the other drivers is missing, after that install windows 7 drivers in windows 8 using compatibility mode. Normally you will need to install Ethernet, card reader and webcam drivers in compatibility mode.

ISSUE and FIX
1. This computer does not meet the minimum requirements for installing the software.
It means you are installing Intel driver by using incompatible operating system, example installing windows XP driver in windows 7. To fix this install the appropriate drivers base on the operating system.

2. High CPU Usage
Normally cause by a virus or too many programs installed/running - Install a lightweight antivirus and uninstall unwanted program. Do optimize your start up items. The other thing that cause this problem is using a non-oem windows. Please get the original oem Windows DVD if you buy the used one.
Overheating - Get a USB fan and place it near to the hottest part of your notebook. Make sure not to use your laptop without any air flow at the bottom, make sure you have something placed under your laptop to provide space for the heat to flow.